How does this train work? (vid)

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    Train Work
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Discussion Overview

The discussion revolves around the workings of a specific train mechanism, likely a model or demonstration related to magnetic propulsion. Participants explore its principles, potential applications, and connections to concepts like Maglev trains, while also seeking clarification for a physics project report.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants inquire about the workings of the train and its relation to Maglev technology.
  • One participant suggests that a moving magnet under the train could be a mechanism at play.
  • Another participant tentatively explains that magnets coated in conductive metal can create a magnetic field when current flows through a coil, propelling the train forward.
  • A later reply mentions that the device functions as a linear motor and discusses the importance of using bare copper wire for the solenoid to allow current flow.
  • There is a contention regarding whether the mechanism is a trick, with some asserting it is not, while others suggest it resembles a perpetual motion machine.
  • One participant confirms that the train is powered by energy stored in a battery, which is a point of agreement among some participants.

Areas of Agreement / Disagreement

Participants express differing views on whether the train mechanism is a trick or a valid demonstration. While some agree that it operates on battery power, the discussion remains unresolved regarding the nature of its propulsion and the validity of the claims about perpetual motion.

Contextual Notes

There are unresolved assumptions about the specific design and operational principles of the train mechanism, as well as the definitions of terms like "perpetual motion." The discussion reflects a mix of technical explanations and speculative reasoning.

Daniel0099
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Can someone briefly describe to me how this works? I am making my own for a physics project and have to do a report with it. What is this an application of / What should I go over in the report, I originally found this when doing a project on Maglev trains but i don't know if it is a similar concept.

Thanks.
 
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I saw a thread on that same thing on here within the last couple of months approx.

did some quick searches .. couldn't find what I was after ... some one else may remember the thread
 
Last edited:
Daniel0099 said:
Can someone briefly describe to me how this works?

Yes, e.g. with a moving magnet under the table.
 
DrStupid said:
Yes, e.g. with a moving magnet under the table.
Is it your contention that this is a trick?
 
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DaveC426913 said:
Is it your contention that this is a trick?

Agree with you Dave

It is a valid video ... I still cannot find the other thread :(
 
Tentative attempt at rudimentary explanation I wouldn't vouch for with my head:

Magnets are typically coated in conductive metal, like nickel, for extended durability. Even if themselves not conductive, their metallic coating will conduct electricity from the battery to the copper coil. The current will flow between + an - through the coil, creating a magnetic field in the process:
electricity-navy-basics-97.jpg

The induced magnetic field will interact with the field of the magnets, propelling the "train" forward.
 
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The dup was deleted, with my explanation. The magnets act as conducting contacts with the bare wire coil. The very clever gadget is a linear motor.
 
The solenoid needs to be bare copper wire, not enamelled, so as the magnets rub along the copper some current flows through that short section of the coil. The ingenuity of some people knows no bounds. :)

Make sure the turns are not each touching, or the current will short out and not go the full distance around each turn. I expect the solenoid after winding will expand a bit, like a spring, so shorted turns should not be a problem.
 
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DaveC426913 said:
Is it your contention that this is a trick?

Yes. The circle would be a Perpetuum mobile.
 
  • #10
DrStupid said:
Yes. The circle would be a Perpetuum mobile.
It would not, it is propelled by the energy stored in the battery. When the battery is discharged, it will not work any more.
 
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  • #11
Orodruin said:
it is propelled by the energy stored in the battery

That sounds reasonable.
 

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